From the given data:<span> vertex at the origin and a focus at (0, 9), the parabola should be facing upwards. In this case, the length of the latus rectum is 9 units which is a. Hence the equation becomes y = 4 (9) x^2. The equation is equal to y = 36 x^2. The standard form is 36 x^2 - y = 0.</span>
120.96! You can round that if you'd like.
Answer:
A) 
Step-by-step explanation:
An equation is a function of 
when is the independent variable, that is:
(1)
Where 
is the dependent variable.
According to this, does not represent a function of , since the independent variable is a function of , that is, 
. Therefore, the correct answer is A.
Answer:
(-1,7)
Step-by-step explanation:
-9x + 2y = 23
-4x - y = -3
multiplying equation 2 by 2
-9x + 2y = 23
-8x - 2y = -6
adding the two equation to cancel out y
-17x = 17
x = -1
plugging back x = -1 into the second equation
4 - y = -3
-y = -7
y = 7
Eight point six two is the answer
